Maintenance Banner & Admin polish – dashboard header now exposes maintenance mode with a persistent banner, dropdown offsets, and a one-click disable flow. Workspace navigation handles trailing slashes, nested paths, and inline create flows; widgets and quick actions pick up the refreshed opaque design system.

Builder layout overhaul – dedicated layout mode with a persistent #layoutRoot, scroll-synced container tree, drag-to-arrange controls, and per-container design assignments. Text tools add ready-made presets, skeleton placeholders, unified color pickers, and fast alignment toggles; publishing saves layouts before page creation, offers slug suggestions via pageService, and automatically uploads previews.

Runtime parity – new designer/list/get events plus the shared envelope orchestrator power both builder and public rendering. Page service, weight-based navigation, workspace-aware seeding, and reserved slug enforcement keep admin and public routes in sync.

Security & install flow – first-run setup introduces a multi-step wizard, strong credential enforcement, and clearer quickstart docs. Designer iframes now verify RSA-signed origin tokens, page loaders sanitize injected HTML/JS, and forbidden username checks prevent weak admin accounts.

CanvasGrid & docs – smoother drag/resize previews, cached column widths, zoom sizers, and bounding-box orchestration via grid-core modules keep large canvases responsive. New jsdom regression tests cover sidebar delays, /admin fallbacks, overlapping seeds, and layout hydration. Documentation highlights responsive builder settings, seeding guidelines, and mandatory setup wizard steps.